Impact of O16(γ,α)C12 measurements on the C12(α,γ)O16 astrophysical reaction rate

Holt, R. J.; Filippone, Brad W.; Pieper, Steven C.

doi:10.1103/PhysRevC.99.055802

Title: Impact of ${}^{16}O (γ, α) {}^{12}C$ measurements on the ${}^{12}C (α, γ) {}^{16}O$ astrophysical reaction rate

Abstract

The ${}^{12}C (α, γ) {}^{16}O$ reaction, an essentialt component of stellar helium burning, plays a key role in nuclear astrophysics. It has direct impact on the evolution and final state of massive stars, while also influencing the elemental abundances resulting from nucleosynthesis in such stars. Providing a reliable estimate for the energy dependence of this reaction at stellar helium burning temperatures has been a major goal for the field. In this work, we study the role of potential new measurements of the inverse reaction, ${}^{16}O (γ, α) {}^{12}C$ , in reducing the overall uncertainty. A multilevel R-matrix analysis is used to make extrapolations of the astrophysical S factor for this reaction to the stellar energy of 300 keV. The statistical precision of the S-factor extrapolation is determined by performing multiple fits to existing E1 and E2 ground-state capture data, including the impact of possible future measurements of the ${}^{16}O (γ, α) {}^{12}C$ reaction. Specifically, we consider a proposed Jefferson Laboratory (JLab) experiment that will make use of a high-intensity low-energy bremsstrahlung beam that impinges on an oxygen-rich single-fluid bubble chamber in order to measure the total cross section for the inverse reaction. The importance of low-energy data as well as high-precision data is investigated.

Authors:

Holt, R. J. ^[1]; Filippone, Brad W. ^[2]; Pieper, Steven C. ^[3]

Argonne National Lab. (ANL), Lemont, IL (United States); California Inst. of Technology (CalTech), Pasadena, CA (United States)
California Inst. of Technology (CalTech), Pasadena, CA (United States)
Argonne National Lab. (ANL), Lemont, IL (United States)

Publication Date:: Thu May 02 00:00:00 EDT 2019

Research Org.:: Argonne National Lab. (ANL), Argonne, IL (United States)

Sponsoring Org.:: National Science Foundation (NSF); USDOE Office of Science (SC), Nuclear Physics (NP)

OSTI Identifier:: 1529375

Alternate Identifier(s):: OSTI ID: 1510363

Grant/Contract Number:: AC02-06CH11357

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review C

Additional Journal Information:: Journal Volume: 99; Journal Issue: 5; Journal ID: ISSN 2469-9985

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 79 ASTRONOMY AND ASTROPHYSICS

Citation Formats


                    Holt, R. J., Filippone, Brad W., and Pieper, Steven C. Impact of O16(γ,α)C12 measurements on the C12(α,γ)O16 astrophysical reaction rate.  United States: N. p., 2019. 
Web.  doi:10.1103/PhysRevC.99.055802.

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                    Holt, R. J., Filippone, Brad W., & Pieper, Steven C. Impact of O16(γ,α)C12 measurements on the C12(α,γ)O16 astrophysical reaction rate.  United States.  https://doi.org/10.1103/PhysRevC.99.055802

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                    Holt, R. J., Filippone, Brad W., and Pieper, Steven C. Thu .  
"Impact of O16(γ,α)C12 measurements on the C12(α,γ)O16 astrophysical reaction rate".  United States.  https://doi.org/10.1103/PhysRevC.99.055802.  https://www.osti.gov/servlets/purl/1529375.

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@article{osti_1529375,

  title        = {Impact of O16(γ,α)C12 measurements on the C12(α,γ)O16 astrophysical reaction rate},

  author       = {Holt, R. J. and Filippone, Brad W. and Pieper, Steven C.},

  abstractNote = {The C12(α,γ)O16 reaction, an essentialt component of stellar helium burning, plays a key role in nuclear astrophysics. It has direct impact on the evolution and final state of massive stars, while also influencing the elemental abundances resulting from nucleosynthesis in such stars. Providing a reliable estimate for the energy dependence of this reaction at stellar helium burning temperatures has been a major goal for the field. In this work, we study the role of potential new measurements of the inverse reaction, O16(γ,α)C12, in reducing the overall uncertainty. A multilevel R-matrix analysis is used to make extrapolations of the astrophysical S factor for this reaction to the stellar energy of 300 keV. The statistical precision of the S-factor extrapolation is determined by performing multiple fits to existing E1 and E2 ground-state capture data, including the impact of possible future measurements of the O16(γ,α)C12 reaction. Specifically, we consider a proposed Jefferson Laboratory (JLab) experiment that will make use of a high-intensity low-energy bremsstrahlung beam that impinges on an oxygen-rich single-fluid bubble chamber in order to measure the total cross section for the inverse reaction. The importance of low-energy data as well as high-precision data is investigated.},

  doi          = {10.1103/PhysRevC.99.055802},

  journal      = {Physical Review C},

  number       = 5,

  volume       = 99,

  place        = {United States},

  year         = {Thu May 02 00:00:00 EDT 2019},

  month        = {Thu May 02 00:00:00 EDT 2019}

}

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Title: Impact of O 16 ( γ , α ) C 12 measurements on the C 12 ( α , γ ) O 16 astrophysical reaction rate

Abstract

Citation Formats

R-Matrix Theory of Nuclear Reactions journal, April 1958

12 C( α , γ ) 16 O studied with the Karlsruhe 4 π BaF 2 detector journal, July 2012

A new measurement of the E1 amplitude in 12C(α,γ0)16O journal, May 2001

A new study for 16 at the energies of nuclear astrophysics interest: The inverse of key nucleosynthesis reaction 12 journal, November 2007

Astrophysical S E 2 factor of the C 12 ( α , γ ) O 16 reaction through the C 12 ( B 11 , Li 7 ) O 16 transfer reaction journal, February 2019

New light in nuclear physics: The extreme light infrastructure journal, January 2017

First Accurate Normalization of the β -delayed α Decay of N 16 and Implications for the C 12 ( α , γ ) O 16 Astrophysical Reaction Rate journal, October 2018

C 12 ( α , γ ) O 16 : The Key Reaction in Stellar Nucleosynthesis journal, April 2001

Nuclear data needs for the study of nucleosynthesis in massive stars journal, May 2003

E 1 and E 2 cross sections of the C 12 ( α , γ 0 ) O 16 reaction using pulsed α beams journal, December 2009

The C 12 ( α , γ ) O 16 reaction and its implications for stellar helium burning journal, September 2017

The Calculation of Errors by the Method of Least Squares journal, April 1932

C 12 (α,γ ) 16 O cross sections at stellar energies journal, September 1992

Nuclear Astrophysics With Gamma-Beams journal, August 2018

Effects of channel and potential radiative transitions in the O 17 ( γ , n 0 ) O 16 reaction journal, November 1978

The E1 and E2 capture amplitudes in 12C(α,γ0)16O journal, December 1999

The 12C(α, γ)16O reaction and stellar helium burning journal, November 1974

Coincidence measurement of the 12 C(α,γ ) 16 O cross section at low energies journal, April 1988

Experimental and theoretical nuclear astrophysics: the quest for the origin of the elements journal, April 1984

The 12C(α, γ)16O cross section at stellar energies journal, January 1987

A Simplex Method for Function Minimization journal, January 1965

Underground nuclear astrophysics studies with CASPAR journal, January 2016

LUNA: a laboratory for underground nuclear astrophysics journal, July 2009

Underground Nuclear Astrophysics Experiment JUNA in China conference, February 2017

E 1 and E 2 S factors of C 12 ( α , γ 0 ) O 16 from γ -ray angular distributions with a 4 π -detector array journal, May 2006

AZURE: An R -matrix code for nuclear astrophysics journal, April 2010

Precise determination of charge-dependent pion-nucleon-nucleon coupling constants journal, June 2017

Bubble chambers for experiments in nuclear astrophysics journal, May 2015

Table of angular-distribution coefficients for (Gamma, particle) and (particle, gamma) reactions journal, October 1971

Precise Determination of Charge Dependent Pion-Nucleon-Nucleon Coupling Constants text, January 2016

Title: Impact of ${}^{16}O (γ, α) {}^{12}C$ measurements on the ${}^{12}C (α, γ) {}^{16}O$ astrophysical reaction rate

R-Matrix Theory of Nuclear Reactions
journal, April 1958

$^{12}$ C( $α, γ$ ) $^{16}$ O studied with the Karlsruhe 4 $π$ BaF $_{2}$ detector
journal, July 2012

A new measurement of the E1 amplitude in 12C(α,γ0)16O
journal, May 2001

A new study for 16 at the energies of nuclear astrophysics interest: The inverse of key nucleosynthesis reaction 12
journal, November 2007

Astrophysical $S_{E 2}$ factor of the ${}^{12}C (α, γ) {}^{16}O$ reaction through the ${}^{12}C ({}^{11}B, {}^{7}{Li}) {}^{16}O$ transfer reaction
journal, February 2019

New light in nuclear physics: The extreme light infrastructure
journal, January 2017

First Accurate Normalization of the $β$ -delayed $α$ Decay of ${}^{16}N$ and Implications for the ${}^{12}C (α, γ) {}^{16}O$ Astrophysical Reaction Rate
journal, October 2018

${}^{12}C (α, γ) {}^{16}O$ : The Key Reaction in Stellar Nucleosynthesis
journal, April 2001

Nuclear data needs for the study of nucleosynthesis in massive stars
journal, May 2003

$E 1$ and $E 2$ cross sections of the ${}^{12}C$ $(α, γ_{0})$ ${}^{16}O$ reaction using pulsed $α$ beams
journal, December 2009

The ${}^{12}C (α, γ) {}^{16}O$ reaction and its implications for stellar helium burning
journal, September 2017

The Calculation of Errors by the Method of Least Squares
journal, April 1932

${}^{12}C$ (α,γ $)^{16}$ O cross sections at stellar energies
journal, September 1992

Nuclear Astrophysics With Gamma-Beams
journal, August 2018

Effects of channel and potential radiative transitions in the ${}^{17}O (γ, n_{0}) {}^{16}O$ reaction
journal, November 1978

The E1 and E2 capture amplitudes in 12C(α,γ0)16O
journal, December 1999

The 12C(α, γ)16O reaction and stellar helium burning
journal, November 1974

Coincidence measurement of the ${}^{12}$ C(α,γ $)^{16}$ O cross section at low energies
journal, April 1988

Experimental and theoretical nuclear astrophysics: the quest for the origin of the elements
journal, April 1984

The 12C(α, γ)16O cross section at stellar energies
journal, January 1987

A Simplex Method for Function Minimization
journal, January 1965

Underground nuclear astrophysics studies with CASPAR
journal, January 2016

LUNA: a laboratory for underground nuclear astrophysics
journal, July 2009

Underground Nuclear Astrophysics Experiment JUNA in China
conference, February 2017

$E 1$ and $E 2 S$ factors of ${}^{12}C$ ( $α, γ_{0}$ ) ${}^{16}O$ from $γ$ -ray angular distributions with a 4 $π$ -detector array
journal, May 2006

AZURE: An $R$ -matrix code for nuclear astrophysics
journal, April 2010

Precise determination of charge-dependent pion-nucleon-nucleon coupling constants
journal, June 2017

Bubble chambers for experiments in nuclear astrophysics
journal, May 2015

Table of angular-distribution coefficients for (Gamma, particle) and (particle, gamma) reactions
journal, October 1971

Precise Determination of Charge Dependent Pion-Nucleon-Nucleon Coupling Constants
text, January 2016